Granted Patent
Utility
US 4,299,719 · App. 06/087,498
Deoxidizer
Inventors:
Motohisa Aoki, Isao Kawakami, Masami Nishihara
Patented Case
View Patent ↗
Granted: Nov 10, 1981
Filed: Oct 23, 1979
Inventors
Motohisa Aoki
Isao Kawakami
Masami Nishihara
Assignees (at issue)
Mitsubishi Chemical Inds. Ltd.
Teikoku Kako Co., Ltd.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.